{"id":3542378,"url":"https://alion.io/job/singularity-defense-propulsion-engineer","title":"Propulsion Engineer","company":{"id":3778918,"name":"Singularity Defense","domain":"singularityus.com","url":"https://alion.io/company/singularity-4","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Rippling","truth_index":{"grade":"A","score":95,"open_postings":24,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":192,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Aerospace","role_family":"Aerospace","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Denver, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":91000,"max_usd":167000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":108},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"FMEA","optional":false},{"name":"MATLAB","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-10-30T18:43:52Z","employer_posted_date":"2026-10-30","last_verified_at":"2026-10-30T19:39:34Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Singularity is an aerospace and defense startup headquartered in Gardena, CA. Our founding team hails from SpaceX, Anduril, and Lockheed Martin, and we are backed by Joint Staff-level military leadership and several Silicon Valley firms. Our first product is a low-cost air defense system built for immediate deployment worldwide. With a world-class business development and leadership team already in place, we are well positioned to capitalize on already overwhelming demand.\nWe are seeking an early-career Propulsion Engineer to join our solid rocket motor team. This is an entry-level individual contributor role in which you will work alongside senior propellant and ballistics engineers on tactical missile, interceptor, and munitions propulsion programs. The successful candidate will support propellant development from lab-scale formulation through motor testing, building hands-on experience in the laboratory, on the mixing floor, and at the test stand. You will develop the analytical skills to connect test data to ballistic predictions, with structured mentorship and increasing technical ownership as you grow.\nKey Responsibilities\nComposite Propellant Formulation\nSupport senior engineers in formulating and optimizing HTPB-AP-Al and related composite propellants for tactical motor programs. \nPrepare and test lab-scale propellant batches to evaluate oxidizer particle size distributions, aluminum fuel types, and binder curative ratios. \nPerform ingredient lot acceptance testing and compatibility screening following established procedures and MIL-SPEC requirements. \nCollect and organize thermal stability, sensitivity, and aging data on candidate formulations. \nHelp track ingredient lot data and supplier certifications, and flag variability.\nTactical Interior Ballistics & Performance Modeling\nRun ballistic performance predictions for tactical motor configurations in SPP, CLWire, or equivalent tools under the guidance of senior ballistics engineers. \nReduce strand burner and subscale motor data to extract burn rate, pressure exponent, and temperature sensitivity across the tactical operating range (-65°F to +160°F). \nCompare predicted and measured motor performance and document the differences. Support ballistic anomaly investigations by gathering data, building plots, and drafting sections of disposition reports. \nContribute analysis to trade studies and PDR/CDR design reviews.\nMixing & Propellant ProcessingSupport composite propellant mixing operations, including ingredient preparation, batch record completion, and in-process measurements such as viscosity and pot life. \n\nFollow and help maintain mixing procedures, cure schedules, and SOPs. \nAssist with troubleshooting mixing anomalies and root cause investigations. \nSupport scale-up from laboratory to production quantities by collecting and comparing lot-to-lot ballistic and mechanical data. \nParticipate in process hazard analyses and management of change reviews.\nTesting, Characterization & Data Analysis\nPrepare specimens and run or support characterization testing for mechanical properties (uniaxial tensile, stress relaxation), burn rate (strand burner, Crawford bomb), and aging (surveillance coupon programs). \nReduce, analyze, and plot test data in MATLAB, Python, or equivalent tools. \nWrite test reports and technical memos, and present results at team meetings. \nSupport static fire testing, including motor preparation, instrumentation, and post-test data reduction. \nHelp prepare data for propellant-related CDRLs and customer submittals.\nLearning & Team Contribution\nWork closely with a senior engineer mentor and take on increasing technical ownership over time. \nParticipate in integrated product team (IPT) meetings and customer technical interchange meetings (TIMs). \nContribute to IRAD initiatives, white papers, and proposal inputs as opportunities arise.\nSafety & Regulatory Compliance\nComplete explosives safety training and follow all safety procedures for energetic materials, including ESD controls and friction/impact sensitivity protocols. \nParticipate in PHA, FMEA, and FTA activities for new propellant formulations and processing operations. \nReport safety concerns and near misses promptly, and support mishap investigations as required.\nRequired Qualifications\nB.S. in Chemical Engineering, Chemistry, Aerospace Engineering, Mechanical Engineering, or closely related field\n0-2 years of relevant experience, including internships, co-ops, or research\nCoursework or project experience in thermodynamics, combustion, propulsion, or materials science\nProficiency in MATLAB, Python, or equivalent for data reduction and analysis\nStrong attention to detail, comfort working in laboratory and production environments, and a commitment to safety\nClear written and verbal communication skills\nU.S. person as defined by ITAR, with the ability to obtain and maintain a U.S. Secret clearance\nPreferred Qualifications\nM.S. in a relevant discipline\nInternship or co-op experience in solid propulsion, energetics, or defense manufacturing\nHands-on experience with collegiate rocketry, solid motor projects, or energetics research\nExposure to composite propellant chemistry (HTPB, AP, aluminum) or polymer processing\nFamiliarity with interior ballistics concepts such as burn rate laws, Kn, and grain geometry\nLaboratory experience with mechanical testing, thermal analysis (DSC/TGA), or rheology","description_format":"text","description_chars":5412,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Air Defense","Defense Manufacturing"],"lifecycle":[{"event":"open","at":"2026-10-30T19:39:34Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring 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